Pulping engine



WERNER PULPING ENGINE Filed Feb. 28, 1927 ATTORNEY Patented Jan. 17, 1928.

UNITED STATES PATENT. FFICE.

WAiTER WERNER, OF HOOSICK FALLS, NEW YORK, ASS IGNOR TO THE NOBLE & WOOD MACHINE G0,, 0]? HOOSIGK FALLS, NEW YORK, A CORPORATION OF NEW YORK.

- romaine ENGINE.

Application filed February 28, 1927. Serial No. 171,678.

My present invention relates to pulping machines in general, and more especially to the meansused for securing the filler strips or'space woods in position between the blades or bars of beater rolls, Jordan plugs, or that part of any machine the structure whereof is similar thereto. a

In many machines used in the preparation of stock from which paper and/or press board may be manufactured, there is included a rotatable part in or to the periphery whereof there is secured a series of spaced bars or blades of metal set 011 edge, the width of the blade being several times as great as is its thickness. The spaces between-blades are usually closed by bars or strips of wood, though other materials may at times be utilized for fillers, "or be combined with the woods.

In most of the heating or pulping engines now in use no positive means for anchoring the space woods in place is provided.- The usual practice being to make the space woods slightly over-size and drive them into place,

depending on friction to retain them in position. If the device be-placed in service without toogreat a lapse of time, so that the woods do not become dried out, they will maintaintheir positions for quite a period of time, or until the woods become so saturated with moisture that they are softened to a degree which will permit them to yield under the urge of the centrifical force to which they are constantly subjected while the device is working. i

When the above described practice is followed, frequent periodic shut downs for the purpose of replacing space woods is necessary, even though the'service be such that none of-the woods have a chance to become dried out to a degreev which allows them to become loose because of shrinkage. The frequency of these shut downs depending largely on the quality of the materials and workmanship which went into the device itself, and in some degree to the class of service to which it is subjected.

The object of this invention is to provide simple but positive means for anchoring the space woods in beater rolls, Jordan plugs, or similarly constructed parts of machines, and thus eliminate the necessity for frequent shut downs now required for the purpose of my object isillustrated in the accompany 111g drawings, in which:

Figs. 1, 2 and 8 are cross sections through adjacent bars or blades of a beater roll, or a Jordan plug, illustrating successive steps in the formation of the completed anchoring means.

Fig. 4 is a similar cross section showing the anchoring means completed and face woods secured in position.

Fig. 5 is a similar'section illustrating a modification of myimproved anchoring means...

Referring to the drawings which are in a certain sense illustrative only, B represents a bar or blade such 'asis generally used on orin a beater roll 01 a Jordan plug, and which is generally secured in place on the frame or core of the roll or plug by means of hoops, but may be secured in any other suitable manner.

S represents a space wood of a size and shape to properly fitinto the space between adjacent bars or blades BB, the sides and top of the part S being preferably grooved at {the points where the anchor bands A are to .1e. bar B will depend on the length of the space woods which it is necessary or desirable to use.

The anchor bands A are suitable lengths of metal of proper thickness and sufficient width, which are preferably initially bent into a U-shape (see Fig. 1) which will fit closelyover the edge and against the sides of' the bars B. The length, of one leg of these U-shaped pieces is preferably left long enough so that it may be bent over the outer edge of the bar (see dotted line in Fig. 1) so as to hold the piece in place until the space woods has been driven to place, the ext-ra length being afterwards cut off.

After the space wood S is in place, the end portion 1', of one band, and the end portion Z, of an adjoining band, both of which will"- then be in contact with the space Wood, are bent down so they lie close against the outer face thereof and are secured in that position and against each other by means. of a nail The number of anchor bands at each or screw, but in what I now believe to be the preferred form they are welded together so that when the job is completed the several bands A are formed into a closed hoop and absolutely prevents the dis )lacement of the woods S unless this hoop e broken. But there are, however, some conditions under which this permanent anchorage is not advisable, and in such cases I prefer to use the modification illustrated in Fig. 5 wherein each end of each anchor straps is fastened to a different space wood by means of nails or screws, the ends not overlapping. and in some cases these nails, or screws, may be omitted and satisfactory anchorage still be obtained by depending simply on the re-, sistance of the bent ends of the straps to prevent the starting of the woods.

here it is desirable to use additional fillers or face woods F, bet-ween the bars, I may use a similar anchorage for these face woods simply making the straps longer (as shown in Fig. 5) or I may fasten the face woods F, in place by means of screws passing therethrough and entering the anchored space woods S, as is illustrated in Fig. 4;

or I may, in some circumstances depend on the usual method-a tight fit between the blades B; for experience has demonstrated to me that where the space woods S are safely anchored and cannot start from their position under any normal circumstance, there is little liability of the face woods be ing started, or loosened sufficiently for them to leave their positions.

IVhile in the foregoing description I have referred to space woods only, it is to be understood that space bars of other materials than wood may be used with my invention, or spacers which are built up partly of wood and. partly of other materials.

It is also to be understood that a number ofmodifications other than that illustrated may be made without departing from the spirit of my invention.

I claim:

1. In a pulping engine: a series of blade bars secured to and spaced about the periphery of a revoluble part thereof; space bars between said blade bars; and anchoring straps passing under said blade bars and over said space bars and secured thereagainst, whereby said space bars are anchored in position.

2. In a pulping engine: a series of blade bars secured to and spaced about the periphery of a revoluble part thereof; space bars between said blade bars; and U-shaped straps passing under'the inner edge of said blade bars then up and over the outer face of said space bars, one end of two adjoining straps being secured against each space bar.

3. In a pulping engine: a series of blade bars secured to and spaced about the periphery of a revoluble part thereof; space bars between said blade bars; and U-shaped straps passing under the inner edge and along the sides of said blade bars, each end of said U-shaped straps bent away from said blade bars and lying against the face of one of said space bars and against each other.

4. In a pulping engine: a series of blade bars secured to and spaced about the periphery of a revoluble part thereof; space barsbetween said blade bars; and U-shaped straps passing under the inner edge and along the sides of said blade bars, each end of said U-shaped straps bent away from the blade bar and against the face of one of said space bars. I

5. In a pulping engine: a series of blade bars secured to and spaced about the pcriphery of a revoluble part thereof; space bars and over said space bars and secured thereagainst.

In testimony whereof I have afiixed my signature.

WALTER WERNER. 

